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Gary D Bierend

Paul H Nicholas

A water flow control valve ( ) designed to be installed externally on a toilet tank ( ) or as an integral element of a toilet ballcock ( ). The valve ( ) incorporates a diaphragm ( ), a spring ( ), a poppet assembly ( ), and an inlet port ( ) that is connected to a utility water supply ( ) and an outlet port ( ) that is connected through a pipe ( ) to a fitting ( ) on the the toilet tank ( ). The valve functions by sensing the pressure at the inlet port ( ). When no large demands are placed on the water supply ( ), the valve ( ) remains open, thus allowing the toilet tank ( ) to fill. When a shower is turned on, the water pressure drops which reduces the upward force on the diaphragm ( ), thus allowing the spring ( ) to place the poppet ( ) in a closed position which prevents the toilet tank ( ) from filling. When the water demand ceases, the water pressure opens the valve ( ), which allows the toilet tank ( ) to fill.

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Canyon Country, CA, United States of America

Gary D Bierend